package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.service.EmployeeService;

import java.time.LocalDateTime;
import java.util.List;

import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;
import org.springframework.web.bind.annotation.RequestBody;

@Service
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //todo 进行对密码的MD5加密，然后比对
        password = DigestUtils.md5DigestAsHex(password.getBytes());
        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对
        // TODO 后期需要进行md5加密，然后再进行比对
        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
	 }
	/*
	 * 新增员工
	 */
	@Override
	public void save(EmployeeDTO employeedto) {
		// TODO 自动生成的方法存根
		//转成实体类
		Employee employee = new Employee();
		//由于哪个属性的变量名都相同，所以可以使用属性拷贝
		BeanUtils.copyProperties(employeedto, employee);
		//设置账号状态
		employee.setStatus(StatusConstant.ENABLE);
		//设置密码,默认为123456,都是用常量类，方便后期维护
		employee.setPassword(DigestUtils.md5DigestAsHex(PasswordConstant.DEFAULT_PASSWORD.getBytes()));
		//设置当前记录的创建时间和修改时间
//		employee.setCreateTime(LocalDateTime.now());
//		employee.setUpdateTime(LocalDateTime.now());
		
		//创建当前记录id和修改id
		//TODO
//		employee.setCreateUser(BaseContext.getCurrentId());
//		employee.setUpdateUser(BaseContext.getCurrentId());
		
		employeeMapper.insert(employee);
	}
	@Override
	public PageResult pageQuery(EmployeePageQueryDTO employeePageQueryDTO) {
		// TODO 自动生成的方法存根
		//确定一下PageResult的属性。total总记录数和records页面集合
		 PageHelper.startPage(employeePageQueryDTO.getPage(), employeePageQueryDTO.getPageSize());

	     Page<Employee> page = employeeMapper.pageQuery(employeePageQueryDTO);//后续定义

	     long total = page.getTotal();
	     List<Employee> records = page.getResult();

	      return new PageResult(total, records);
	}
	@Override
	public void StartOrStop(Integer status, Long id) {
		// TODO 自动生成的方法存根
		Employee employee=Employee.builder()
		.status(status)
		.id(id)
		.build();
		employeeMapper.update(employee);
	}
	@Override
	public Employee GetById(Long id) {
		// TODO 自动生成的方法存根
		//调用mapper获取数据库数据
		Employee employee = employeeMapper.GetById(id);
		employee.setPassword("****");
		return employee;
	}
	@Override
	public Employee update(@RequestBody EmployeeDTO employeeDTO) {
		// TODO 自动生成的方法存根
		//将employeeDTO转换为新对象
		//转成实体类
		Employee employee = new Employee();
		//由于哪个属性的变量名都相同，所以可以使用属性拷贝
		BeanUtils.copyProperties(employeeDTO, employee);
		//设置当前记录的创建时间和修改时间
//		employee.setUpdateTime(LocalDateTime.now());
		//创建当前记录id和修改id
		//TODO
//		employee.setUpdateUser(BaseContext.getCurrentId());
		//调用mapper
		employeeMapper.update(employee);
		
		return employee;
	}
	

}
